Combined alternating pump and control valve



Aug. 22, 1939. D. R.-HILVLIS COMBINED ALTERNATING PUMP AND CONTROL VALVEv i ed Oct. 20, 1956 '2 Sheets-Sheet 1 .PjlEul. '73 7\3 47 Q 7 IETORDavid R.Hillis $.19 2'8 ATTORNEY Aug. 22, 1939. D. R. HILLIS COMBINEDALTERNATING PUMP AND CONTROL VALVE Filed Oct. 20, 1936 2 Sheets-Sheet 2INYENTQR. H 2! Z 23.

ATTORNEY.

Patented Aug. 22,- 1939 COMBINED ALTERNATING PUMP AND CONTROL VALVEDavid R. Hillis, Detroit, Micln, assignor to 'lrabonEngineering.Corporation, Cleveland, Ohio, a corporation of- OhioApplication October '20, 1936, Serial No. 106,556

9 Claims. 184-1) UNITED STATES A E T OFFICE My invention pertains to afluid circulating device for use in single line flow-reversing systemsfor distributing lubricant or other fluids and more particularly myinvention pertains to a combined alternating pump and control valve foruse in such systems.-

It is an object of my invention to provide an alternating pump and anautomatically oper- .-.ated'flow control valve of simple constructionfor 10 use in single line flow-reversing systems for distributingpredetermined quantities of lubricant or other fluid.

It is also an-object of my invention to provide an alternating pump incombination with, a flow 16 indicating device and an automaticallyoperated flow control valve, the entire combination being I used forsupplying fluid'reversely into opposite ends of a single line systemwhilst returning the 'by-passed fluid from; the other end thereof 20through the flow indicating device. My invention-however, both as-to'itsorganization and its method ofoperatiomtogether. with additional objectsand advantages thereof, will best be understood from the followingdescription 25 of a specific embodiment, when read'in conjunction withthe accompanying drawings, where like reference characters are usedthroughout to designate similar parts and inwhich:

Fig. 1 is a sectional view through my fluid ci-rgo culatin g-pump takenon line l-l of Fig. 2,

Fig. 2 is an end elevational view of my fluid circulating pump; l Fig. 3is a view similar to Fig. 1 showing the moving elements of the pump indifferent-opera]- tive positions, I.

Fig. 4 is a fragmentary sectional view on line 4-4 of Fig. 1; I

Fig. 5 is 'an end elevational view of my fluid circulating pump assemblycomprising the flowindicator, and the device for connecting thedischarged fluid into and returning it from the distributing system; andx v Fig. 6 is a vertical sectional view throughthe 5 Fig. 5;

Fig. '7 is a plan view of the apparatus of Fig. 5 illustrating itsconnection with the service line. Referring'more particularly to Figs.1, 2 and 1 3 of the drawingamy fluidcirculating pump com- 50 prises abody I having a fluid storage reservoir 3 which is formed. integrallyon-the upper portion thereof and having a pair of piston guidingapertures I and [which extend throughthe lower portion of the body insubstantially parallel relation spaced vertically under the reservoir.For

conducting fluid from the reservoir 3 into the piston guiding apertures,fluid conducting passages 9 and II extend downwardly therefrom andconnect respectively into the side walls of the upper 'and the lowerpiston guiding apertures I 5 and 5 at intermediate points substantiallyunder the middle of the reservoir. The'adjacent endsof the pistonguiding apertures at the left hand side of the body are counter-boredand internally threaded to receive plugs or closuremembers I3 10 forclosing the ends of the apertures. At adjacent points, near the innerends of the closure plugs ll discharge ports l5 and I! extend from thebottom and side walls of the piston guiding apertures 5 and Irespectively for connection .16. through conduits l9 and respectively.

Pistons 23 and 25 are slidably disposed within 'the piston guidingapertures! and 5 respectively.

Both apertures are counter-bored from the end at the right hand side ofthe body to adjacent the 20. inlet passages 9 and II to provide a largerdiameter to receive guide sleeves 21 which are slipped into theapertures from the right hand in con-. centrically disposed relationaround the pistons. The innermost ends of the guide sleeves 21 are- 25tapered inwardly for compressing any suitable packing material or gasket28 against the inner end of the counter-bore and against the side wallsof the piston. The right hand end of each aper--' ture is providedwith'a larger counter-bore which 30 is internally threaded forreceiving-a hollow ex-- ternally threaded packing nut 29 which abuts theoutermost end of each guide sleeve 21 whereby the 'latter may beadjustably compressed against thepacking 28 to provide the necessary Idegree of pressure therein for hermeticaliysealing the piston. :and 'flas they' slide in the apertures. Q

For manually operating my fluid circulating I pump, it is provided witha shaft 3| which passes 40 transversely through the body I between thepiston guiding apertures i and 1 and is journalled in .bearings'fl and35 disposed on opposite sides of automatic flow controlling device, online 6-4 of the-body. All interm port 1 y around the. shaft and betweenthe pistons. 23 and 25 and bearings 33 and 35 is cut out to provide acavity for receiving a gear wheel .31 having suitable teeth 88 forengaging teeth 4| which are suitably provided on the adjacent sides ofthe shaft 3| in the body, a removable closure 44 is provided in the bodybetween the piston apertures and 1 at the right hand side of the body.One end of the shaft 3| extends beyond the bearing 33 to receive a crank45 which is suitably keyed thereto and comprises a manually actuablehandle 41 adapted to move in the arc of a circle adjacent the side ofthe reservoir 3 for imparting an oscillatory movement to the shaft.

The gear wheel-31 is adapted to be oscillated by actuationof-the handle41 thereby simultaneously driving the slidable pistons 23 and in0pposite directions in their respective apertures. As the piston 23 ismoved to the right to its extreme position, as shown in Fig. 3, ituncovers the port connecting through the passage 9 from the reservoir 3and the fluid from the reservoir is sucked into the space in the lefthand end of the aperture. As the piston 23 is now driven in the oppositedirection, it forcefully drives the fluid out of the discharge outlet Hat the end of the aperture. The other piston21 is reciprocatedsimultaneously and it alternately draws fluid from the storage reservoir3 through the interconnected passage H and discharges it through thedischarge outlet l5.

The single service line is illustrated in Fig. 7, with its local feederunits A, A, A, and having its ends designated 50 and 52 respectively.

The fluid discharged from the outlet l1 is.deliveredthrough the conduit2| to the end 50, and that discharged from the outlet -l5, through theconduit l9, to the-end 52, of the service line. When fluid is dischargedfrom either one of said outlets into its respective end of the serviceline the other end of said line is automatically connected to thereservoir 3 to return the by-passed fluid to said reservoir. For thispurpose there is provided a control device which comprises a tubu larbody 5| having a valve guiding aperture 53 which extends axiallytherethrough. Each end of the piston guiding aperture 53 is counterboredto a larger diameter and is internally threaded to provide pipe-fittings55 for connection with the discharge outlets l5 and I1 of the pumpthrough conduits l9 and 2|. A discharge port 51 which is connected fromthe middle of the valve guiding aperture 53 is provided at its outer endwith a pipe fitting 59. On the opposite side of the tubular body 5|, Iprovide a pair of line connecting ports BI and 62 which are providedexternally with suitable pipe-receiving flttings' Y 63 for connectionwith theopposite ends 50 and upon the end 52 of said service line.Within the valve guiding aperture 53, I provide a dumb-bell valve piston54 for slidable movement therein to selectively connect either line port6| or 62 with .the discharge port 59. Thepipe fittings limit the valvemovement.

The tubular body 5| is mounted on the side of my fluid circulating pumpby connecting the conduits 2| and I9 respectively into the pipe fittings55 at the upper and lower ends of the valve guiding aperture. Pipegripping nuts 56 may be threaded into the pipe fittings 55 for securingthe pipes therein or the pipes may be directly threaded therein as willbe readily-understood. From thedischarge port 51, a fluid receivingconduit 65 extends to a fluid flow indicator 61 comprising -a glass tubewhich is connected by means of a suitable clamping nut 69 threadab'lyengaged of the conduit 65. The other end ofthe glass indicator tube 61is connected to a conduit comprising an elbow member 1| which connectsinto the side wall of the reservoir 3.

outwardly on In operation,'the lubricant or other fluid to bedistributed is placed in the reservoir 3 which may be closed by asuitable cover 13. The operator by manipulating the handle 41 imparts anoscillatory movement to the gear 31 thereby simul- 5 taneously actuatingthe pistons 23 and 25 in op 'te directions in their guiding apertures.As each piston uncovers its associated fluid inlet passage 9 or II, acharge of the fluid is sucked into the left hand end of its pistonguiding m aperture. As each piston is forced to the left hand end of itsaperture, it discharges the charge of fluid received therein through itsassociated discharge outlet l5 or H respectively. Consequently theconduits l9 and 2| alternately receive 15 quantities of fluid dischargedunder high pressure from the pump. p

Assumingthe handle 41 on the pump is moved so that the conduit 19 isreceiving a high pressure impulse, the valve piston 54 will be lifted to0 the uppermost position, as shown in Fig. 6. In this position,thecharge of fluid passes into the aperture 53 and thence outwardlythrough the line port 62 into the end 52 of an associated fluiddistributing system.

After the lubricant has passed completely around the line circuit andactuated all the feeders disposed therein for lubricating the associatedbearings, the fluid is thereafter by-passed in the usual manner. Theby-passed fluid returning from the other end of the line 50 enters theline port 6|, passes along the valve guiding aperture 53 aroimd therestricted portion of the valve 54 and thence out of the discharge port51, returning through fluid receiving conduit 65. From the conduit 65,the fluid passes through the flow indicating device 61 and thence intothe reservoir 3 of the pump. a

When the handle 41 on the pump is moved in the opposite direction, thepiston 25 is drawn its successive stroke to suck in a new charge and thepiston 23 is forced to the left to apply high pressure discharge offluid through the conduit 2| into the upper end of the device 5|. Thevalve piston 54 is now moved to its lower- 5 most position for passingthe high pressure fluid through the line port 6| into the end 53 of thefluid distributing line. After distribution around the system, theby-passed fluid returns into the control device through the lower lineport 62 thence out of the discharge port 51. The bypmd fluid now returnsthrough the fluid flow dicator 61 to the reservoir 3 of the pump.

The fluid flow indicator 61 thus gives the operator a manifestation ofthe successful operation of the pump and system every time it operatesto force fluid through the system in either direction.

It will be seen that I have provided a manually operable fluidcirculating pump of simple construction for use with single-lineflow-reversing o0 fluid distributing systemscomprising a flow indicatorand having a minimum number of moving Aside from the specific embodimentof the invention herein shown and described, it willbe e5 device forreturning the responding end of an associated distributing line and forsimultaneously connecting the other end of the line to the fluidreceiving conduit on said by-passed fluid from the distributing line.

,2. A fluid circulating device for single-line reverse-flow distributingsystems having in combination, a body, a fluid reservoir thereon, a flowindicator, a fluid receiving conduit for passing fluid into saidreservoir through said flow indicator, twodischarge outlets in saidbody, a double acting pump for discharging fluid from said reservoirthrough said discharge outlets alternately and an automatic deviceresponsive to the fluid discharged from said outlets for connecting theinstant discharging outlet to a corresponding end of a single linedistributing system and for simultaneously connecting the other endthereof to the fluid receiving conduit for passing the bypassed fluidthrough said indicator into the reservoir.

3. A fluid circulating device for single-line reverse-flow distributingsystems having in combination, a body, a fluid indicator, a fluidreceiving conduit for passing fluid into said reservoir through saidflow indicator, two discharge out-- lets in said body, a pair ofpisto'ns slidable in saidbody for pumping fluid from said reservoirthrough said discharge outlets, manually actuable means for operatingsaid pistons simultaneously to discharge fluid alternately from the.outlets, and an automatic device responsive to the fluid dischargedfrom said outlets, said device comprising valvemean's for connecting theinstant discharge outlet to a corresponding end v of a single linedistributing system and ior simultaneously'connecting the other end ofan associated system to the fluid receiving conduit for passing theby-passed fluid through said indicator into said reservoir. v r

H 4. A fluid circulating device for single-line reverse-flowdistributing systems having in combination, a .body, a fluid reservoirthereon, a flow indicator, a fluid receiving conduit for passing fluidinto said reservoir through said-flow indicator, two piston guidingapertures extending through said body, an inlet conduit connecting fromthe reservoir to each aperture, a discharge outlet from each aperture,9. piston slidably disposed in each aperture for pumping fluid from thereservoir through the associated discharge outlet,-manually actuablemeans for operating said pistons simultaneously to discharge fluidalternately from the discharge outlets, and an automatic deviceresponsive to the fluid discharged irom said outlets, said devicecomprising valve means for connecting the instant discharging outlet toa corresponding end of an associatedsingle line distributing system andfor simultaneously connecting the other end or the -line to the fluidreceiving conduit for sending by-.-passed fluid through said flowindicator to, the

reservoin.

5'. A fluid circulating device for single-line reverse-flow distributingsystems having in com bination, a,body, a fluid reservoir thereon, aflow indicator, afluid receiving 'conduitior' passing -fluid into saidreservoir through said flow indicator, two piston =guiding aperturesextending through said body under the reservoir, an inlet reservoir.

;means for connecting the instant discharge outlet to a correspondingend 'of a single line distributing system and'for simultaneouslyconnecting the other end of the line to the fluid receiving conduit forreturningby-passed fluid through said indicator to the reservoir.

6. A fluid circulating device ior single-line reverse-flow distributingsystems having'in com-- bination, a body, a fluid reservoirrthereon, twodischarge outlets in said body, a double acting pump for discharging'fluid from said reservoir through said discharge outlets alternately, aflow indicator, a fluid receiving conduit for receiving fluid by-passedthrough a single line distributing system and passing it through saidflow indicator tosaid reservoir, an automatic device responsive to thefluid discharged from said outlets,

said automatie device comprising a tubular body having a valve guidingaperture extending therethrough, an inlet port at each end of the aper-I ture, a discharge port connecting from said aperture in the middle ofthe body, .two line ports connecting from the aperture at axially spacedpoints therein, conduits-connecting said inlet 35.

ports with the pump discharge outlets, and a dumb-bell valve pistonslidably disposed for reciprocation in said guide aperture inresponse'to the injection of fluid from-the pump discharge-l port forconnecting said 49 outlets into' either inlet inlet port to the adjacentline port to pass the injected fluid therethrough. to the connected endof an associated line, and for simultaneously connecting the other lineport with said discharge port whereby fluid by-passed through the lineis conducted through said flow indicator into the 7. A fluid circulatingdevice for single-line reverse-flow distributing systems having incombination, a body, a fluid reservoir thereon, a flow indicator, afluid receiving conduit for returning fluid to said reservoir throughsaid flow indicator,

two discharge outlets in said body, a pair oi pistons slidable in saidbody for pumping fluid from said reservoir through said dischargeoutlets, manually actuable means for operating said pistonssimultaneously to discharge fluid alternately from said outlets, anautomatic device responsive to thefluid discharged from said outletscomprising a tubular body having a valve conduit connecting from thereservoir to an I guiding aperture-extending therethr'ough, adischarge'port connecting from the aperture inthe middle of said body,two line ports spaced axially along said body and connecting from saidaperture, a dumb-bell valve piston slidably disposed for reciprocationin said guiding aperture to connect either lineport through the adjacentand of the aperture whilst connecting the other line port through thedischarge port, conduit means connecting the discharge outlets oi thepump responsively into opposite ends of the valve guiding aperture;means connecting said fluid receiving conduit with the discharge port insaid valve aperture wnereby the quantities oi. fluid dischargedalternately from said pump outlets 41' are applied successively inoppositev directions through an associated distributing system and theby-passed fluid is returned to the reservoir throughsaid fluid flowindicator.

8. In a control device for delivering fluid alternatelyinto either endof a distributing line whilst connecting the other end of the linethrough a fluid receiving conduit, the combination of a. tubularbodyvhaving a valve guiding aperture extending therethrough, an inletport at each end of said aperture, two line ports connecting from saidaperture at spaced positions along the side of the body for connectionwith the ends of a line, a discharge port connecting from said aperturein the middle of said body, and valve meansslidably disposed in said,aperture for reciprocation by the injection of fluid into either I inletport for conducting the injected fluid to the adjacent one of the lineports while simultaneously connecting the other line port to the saiddischarge port.

9. In a control device for delivering fluid alternately into either endof a distributing line whilst disposition between connecting the otherend of the line through a fluid receiving conduit, the combination of atubular body having-a valve guiding aperture extending therethrough, aninlet port at each end of said aperture, two line ports connecting fromsaid aperture at spaced positions along the side 'of the body 'forconnection with the ends of a line, a discharge port connecting fromsaid aperture in the'middle of said body, a valve piston slidablydisposed in said aperture for reciprocation by the injection of fluidinto either inlet port for connecting the injected fluid into theadjacent one of the line ports while simultaneously connectingthe otherline port to the discharge port, said valve piston comprising two pistonheads of a suitable axial dimension for the discharge port, the lineports and the inlet ports respectively, and a reduced interconnectingmember for spacing the piston heads a distance substantially equal tothe spaced distance between said inlet ports.

DAVIb R. HILLIS.

